Astrofísicas: Galaxias

  • Publicación
    The nature of V39: an LBV candidate or LBV impostor in the very low metallicity galaxy IC 1613?
    Context. Very few examples of luminous blue variable (LBV) stars or LBV candidates (LBVc) are known, particularly at metallicities below that of the Small...
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    The Near-Infrared Ca II Triplet-σ Relation for Bulges of Spiral Galaxies
    We present measurements of the near-infrared Ca II triplet (CaT, CaT*), Paschen (PaT), and magnesium (Mg I) indices for a well-studied sample of 19 bulges of...
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    The Near-infrared Coronal Line Spectrum of 54 nearby Active Galactic Nuclei
    The relationship between the emission of coronal lines (CLs) and nuclear activity in 36 Type 1 and 18 Type 2 active galactic nuclei (AGNs) is analyzed, for the...
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    The Near-IR Calcium Triplet: Empirical Calibration and Stellar Populations Models
    Not Available
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    The near-IR properties and continuum shapes of high redshift quasars from the Sloan Digital Sky Survey
    We present J-H-K' photometry for a sample of 45 high redshift quasars found by the Sloan Digital Sky Survey. The sample was originally selected on the basis of...
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    The nearest extreme starburst: bubbles, young star clusters and outflow in the merger NGC 3256
    We have studied the extreme starburst in the infrared merger NGC 3256. We detect four galactic bubbles (using ESO New Technology Telescope and Hubble Space...
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    The Nearest Ultra Diffuse Galaxy: UGC 2162
    We describe the structural, stellar population and gas properties of the nearest ultra diffuse galaxy discovered so far: UGC 2162 (z = 0.00392 {R}e,g=1.7(+/- 0...
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    The NGC 346 massive star census. Nitrogen abundances for apparently single, narrow lined, hydrogen core burning B-type stars
    Previous analyses of two large spectroscopic surveys of early-type stars in the Large Magellanic Cloud (LMC) have found an excess of nitrogen enriched B-type...
  • Publicación
    The NIR Ca ii triplet at low metallicity. Searching for extremely low-metallicity stars in classical dwarf galaxies
    The NIR Ca ii triplet absorption lines have proven to be an important tool for quantitative spectroscopy of individual red giant branch stars in the Local Group...